5μg.mL-1) and linearity (r2?0.999) with consistent recoveries and less than 5% RSD for all compounds. Hence, the proposed UPLC/PDA/QDa method is a simple, sensitive and comprehensive technique where identification and quantification can be done. It gives for complete impurity profile evaluation of BRIM/TIMO in the ophthalmic formulation during quality control in the pharmaceutical industry.Three simple, sensitive, precise, reproducible and validated spectrophotometric methods have been developed for the quantification of pipazethate HCl as antitussive drug in pure and dosage forms.
The methods are based on utilization of N-bromosuccinimide as an oxidant and three dyes, amaranth, methylene blue, and indigo carmine, as auxiliary reagents. The proposed methods are based on oxidation reaction of pipazethate HCl with a known excess of N-bromosuccinimide in acid medium, followed by determination of unreacted N-bromosuccinimide by the reaction with a fixed amount of dyes, amaranth, methylene blue, and indigo carmine followed by the measurement of the absorbance at 520, 663 and 610nm, respectively. The optimization of the reaction conditions was investigated.
Under the optimum conditions, linear relationships with good correlation coefficients (0.9998-0.9999) were found over the concentration ranges of 0.3-9.0, 0.5-12 and 0.5-10μgmLwith a limit of detection (LOD) of 0.1, 0.15 and 0.15μgmLuss further ascertained by performing recovery studies via the standard addition method. Statistical comparison of the results obtained by applying the proposed methods with those of the reported method by applying Student's t-test and variance ratio F-test at the 95% confidence level revealed good agreement and indicates no significant difference in accuracy and precision.Mangifera indica has been used for treating health complications with little data on its toxicological impact on survival, geotaxis, reproduction, and the antioxidant system.
Total phenol and flavonoid contents were estimated. The ingestion method of exposure (extract was mixed in flies' food) was used. Each concentration was administered per 10g fruit flies diet. 7-day LCwas determined by exposing 50 flies for 7 days to Mangifera indica concentration ranging from 100mg extract/10g diet to 2000mg extract/10g diet. 28 days survival assay was performed by exposing 50 fruit flies each to 25mg extract/10g diet, 50mg extract/10 diet g, and 100mg extract/10g diet for 28 days. A 6-day short term exposure was also conducted to assess Mangifera indica toxic effect on climbing activity, survival, reproduction, and antioxidant system in Drosophila melanogaster.
Total phenol and flavonoid content were 0.226±0.02 and 0.027±0.05mg/g dry weight of the extract, respectively. There was a significant mortality rate (P&lt;0.05), and the 7-day LCwas 353mg extract/10g diet. At 25mg extract/10g diet 50mg extract/10g diet and 100mg extract/10g diet, the survival-rate of fruit flies significantly dropped (P&lt;0.05) with arise in Mangifera indica concentration. Short-term exposure also showed a significant reduction (P&lt;0.05) in GST-activity, survival-rate, and emergence of young fruit flies with an increase in concentration. Total thiol, locomotor, AChE, and CAT activities decreased non-significantly (P&gt;0.05).
The significant adverse effect of Mangifera indica extract as seen in the decrease in survival rate, the emergence of young flies, climbing, and antioxidant activities of fruit flies suggests its cautious application and use in herbal medicine.
The significant adverse effect of Mangifera indica extract as seen in the decrease in survival rate, the emergence of young flies, climbing, and antioxidant activities of fruit flies suggests its cautious application and use in herbal medicine.Primary cutaneous CD8+ T-cell lymphoma has been included as a provisional entity within the new revised classification of lymphoid neoplasms of the World Health Organization in 20161. https://www.selleckchem.com/products/sb-505124.html It was initially described as indolent CD8+ lymphoid proliferation of the ear2 and a total of 29 cases of such neoplasm have been published in the literature so far. None of them have been linked to delayed contact hypersensitivity reactions. We present a case of acral type primary cutaneous lymphoma T CD8+ involving both earlobes clearly related with the prolonged use of gold earrings, confirmed with epicutaneous tests, histopathology, immunohistochemical and molecular studies. Auricular skin lesions were induced again with a provocation test with identical histopathologycal and the same clonality, confirming both the diagnosis of lymphoma and its induction by the antigenic stimulus of gold.Biofilm-producing pathogens, such as Acinetobacter baumannii, have aroused escalating attention. Because these bacteria could secrete mixture with close-knit architecture and complicated components to resist traditional antibiotics. Here, we reported an amphiphilic peptide denoted as zp3 (GIIAGIIIKIKK-NH2), which showed favorable bioactivity against Acinetobacter baumannii ATCC 19606 (minimal inhibitory concentration, MIC = 4 μM) and low cytotoxicity to mammalian cells Vero (half maximal inhibitory concentration, IC50 &gt; 100 μM). Importantly, zp3 could inhibit the formation of biofilm at micromole level and eliminate around 50% preformed biofilm at 32 μM after 6 h treatment. This peptide was able to bind with biofilm while maintaining a helical structure in a mimic biofilm-rich environment. In vivo test demonstrated that zp3 rescued 33.3% of larvae after 48 h infection and reduced 1 log live bacteria inside the animal body after 6 h treatment. The bactericidal mode for zp3 was attributed to the combination of influencing ions balance at low concentration and inducing permeability alteration and pore formation on the Acinetobacter baumannii membrane at high concentration. Application on medical textiles also proved that zp3 could perform a good antibacterial activity in practice.Gram-negative bacteria cause the majority of highly drug-resistant bacterial infections. To cross the outer membrane of the complex Gram-negative cell envelope, antibiotics permeate through porins, trimeric channel proteins that enable the exchange of small polar molecules. Mutations in porins contribute to the development of drug-resistant phenotypes. In this work, we show that a single point mutation in the porin PorB from Neisseria meningitidis, the causative agent of bacterial meningitis, can strongly affect the binding and permeation of beta-lactam antibiotics. Using X-ray crystallography, high-resolution electrophysiology, atomistic biomolecular simulation, and liposome swelling experiments, we demonstrate differences in drug binding affinity, ion selectivity and drug permeability of PorB. Our work further reveals distinct interactions between the transversal electric field in the porin eyelet and the zwitterionic drugs, which manifest themselves under applied electric fields in electrophysiology and are altered by the mutation.